Count message tokens (Anthropic Messages API)

POST

{base_url}

messages

count_tokens

Error

A valid request URL is required to generate request examples

{
  "input_tokens": 123
}

{
  "error": {
    "message": "<string>",
    "type": "<string>"
  },
  "type": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>"
  },
  "type": "<string>"
}

Authorizations

Authorization

string

header

required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

Anthropic Messages request

cache_control

object

max_tokens

integer

messages

object[]

Show child attributes

metadata

object

Show child attributes

model

string

stop_sequences

string[]

stream

boolean

system

temperature

number

thinking

object

Show child attributes

tool_choice

object

Show child attributes

tools

object[]

Show child attributes

top_k

integer

top_p

number

Response

input_tokens

integer

Last modified on August 22, 2026

⌘I

Error

A valid request URL is required to generate request examples

{
  "input_tokens": 123
}

{
  "error": {
    "message": "<string>",
    "type": "<string>"
  },
  "type": "<string>"
}

{
  "error": {
    "message": "<string>",
    "type": "<string>"
  },
  "type": "<string>"
}

admin

system

mcp

passthrough

audio

batch

chat

conversations

embeddings

files

messages

models

realtime

responses

usage

Count message tokens (Anthropic Messages API)

Authorizations

Body

Response